func (testWrapper *blockchainTestWrapper) populateBlockChainWithSampleData() (blocks []*protos.Block, hashes [][]byte, err error) {
var allBlocks []*protos.Block
var allHashes [][]byte
// -----------------------------<Genesis block>-------------------------------
// Add the first (genesis block)
block1 := protos.NewBlock(nil, nil)
allBlocks = append(allBlocks, block1)
allHashes = append(allHashes, []byte("stateHash1"))
testWrapper.addNewBlock(block1, []byte("stateHash1"))
// -----------------------------</Genesis block>------------------------------
// -----------------------------<Block 2>-------------------------------------
// Deploy a chaincode
transaction2a, err := protos.NewTransaction(protos.ChaincodeID{Path: "Contracts"}, testutil.GenerateUUID(testWrapper.t), "NewContract", []string{"name: MyContract1, code: var x; function setX(json) {x = json.x}}"})
if err != nil {
return nil, nil, err
}
// Now we add the transaction to the block 2 and add the block to the chain
transactions2a := []*protos.Transaction{transaction2a}
block2 := protos.NewBlock(transactions2a, nil)
allBlocks = append(allBlocks, block2)
allHashes = append(allHashes, []byte("stateHash2"))
testWrapper.addNewBlock(block2, []byte("stateHash2"))
// -----------------------------</Block 2>------------------------------------
// -----------------------------<Block 3>-------------------------------------
// Create a transaction'
transaction3a, err := protos.NewTransaction(protos.ChaincodeID{Path: "MyContract"}, testutil.GenerateUUID(testWrapper.t), "setX", []string{"{x: \"hello\"}"})
if err != nil {
return nil, nil, err
}
// Create the third block and add it to the chain
transactions3a := []*protos.Transaction{transaction3a}
block3 := protos.NewBlock(transactions3a, nil)
allBlocks = append(allBlocks, block3)
allHashes = append(allHashes, []byte("stateHash3"))
testWrapper.addNewBlock(block3, []byte("stateHash3"))
// -----------------------------</Block 3>------------------------------------
return allBlocks, allHashes, nil
}
func TestBlockChain_SingleBlock(t *testing.T) {
testDBWrapper.CreateFreshDB(t)
blockchainTestWrapper := newTestBlockchainWrapper(t)
blockchain := blockchainTestWrapper.blockchain
// Create the Chaincode specification
chaincodeSpec := &protos.ChaincodeSpec{Type: protos.ChaincodeSpec_GOLANG,
ChaincodeID: &protos.ChaincodeID{Path: "Contracts"},
CtorMsg: &protos.ChaincodeInput{Function: "Initialize", Args: []string{"param1"}}}
chaincodeDeploymentSepc := &protos.ChaincodeDeploymentSpec{ChaincodeSpec: chaincodeSpec}
uuid := testutil.GenerateUUID(t)
newChaincodeTx, err := protos.NewChaincodeDeployTransaction(chaincodeDeploymentSepc, uuid)
testutil.AssertNoError(t, err, "Failed to create new chaincode Deployment Transaction")
t.Logf("New chaincode tx: %v", newChaincodeTx)
block1 := protos.NewBlock([]*protos.Transaction{newChaincodeTx})
blockNumber := blockchainTestWrapper.addNewBlock(block1, []byte("stateHash1"))
t.Logf("New chain: %v", blockchain)
testutil.AssertEquals(t, blockNumber, uint64(0))
testutil.AssertEquals(t, blockchain.getSize(), uint64(1))
testutil.AssertEquals(t, blockchainTestWrapper.fetchBlockchainSizeFromDB(), uint64(1))
}